Dimethylformamide → HCID 57901758, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of ethyl 5-fluoro-1-(methoxymethyl)-7-[(2-thienylsulfonyl)amino]-1H-indole-2-carboxylate (0.45 g), 60% sodium hydride (52 mg) and N,N-dimethylformamide (10 mL) was stirred at 4° C. for 30 min. Methyl iodide (0.095 mL) was added to the solution, and the mixture was stirred at room temperature for 2 days. The reaction solution was diluted with ethyl acetate, washed with aqueous citric acid solution and saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (ethyl acetate:hexane=1:9-2:8) to give the title compound (0.20 g, yield 43%) as colorless prism crystals.

Provenance & Evidence